Acier ti maboko ayeke kangbi so ayeke na popo ti nzoni na sioni .

Plate handwheel is through one-time stamping and into of, common Yu and valve supporting using, market Shang of handwheel type has many, color also fresh bright, quality of plate handwheel, internal structure is solid of, surface smooth, feel delicate, touch good, not in using handwheel of when, due to friction of role and hurt hand Department skin, addition, some inferior of handwheel, in using a time Hou, surface na ndo ti ala ayeke mo bâ mo tene a yeke oxidation, na poro ti tere ti ala, na ala yeke na yâ ti dû.